Spraying apparatus.



No. 869,936. PATENTED NOV.. 5. 1907.

D. F. PREVOST.

SPRAYING APPARATUS. APPLICATION FILED PEB.1, 1907.

2 SHEETS-SHEET 1.

PATENTED NOV. 5, 1907. D. P. PREVOST. SPRAYING APPARATUS. APPLICATION rum) MB. 1, 1907.

2 SHEETS-SHEET 2- STATES ATENT OFFICE.

DWIGHT F. PREVOST, F NEW'YORK, N. Y., Assrenoa OF ONE-HALF T0 Bureaus IVES HURRY, OF NEW YORK, N. Y. 1

srmrme Application filed February To all whom it may concern: I

Be it known that I, Dwronr F. Pnnvos'r, a citizen of the United States, and a resident of the borough of Manhattan, city of New York, in the county of New 5 York and State of New York, have invented certain new and useful Improvements in Spraying Apparatus,

, l5 'for'supplying air under pressure to the other of the said nozzles, and means for regulating the flow of :liquid through one of the said nozzles controlled by the pressure of air exerted by the other-nozzle. The means for regulating the flow of theliquid also acts to break it up before it issues from the nozzle, and preferably.

takes the form of a ball valve adapted to closthe nozzle more or less according to the pressure exerted by the air issuing from the other nozzle. If the pressure exerted by the air is great, the ball, which is adapted to fluctuate freely, will almost close the nozzle. By

this means the liquid will be forced to travel around the ball, and will be formed into a thin-membrane or skin before it mingles with the air from the other nozzle. This has the effect of producing a very fine mist-like spray. When the pressure of air exerted by the other nozzle is not so great the ball will allow the liquid to flow more freely, yet tending to break up the liquid as before.

' The liquid can, of course, be supplied from any suitable source of supply, but preferably there is a main source of supply which feeds either zcontinuousl'y or at will to a reservoir contained in the atomizer proper. To effect this feeding automatically the liquid in-the main source of supply is under pressure; so that when 40 a valve is opened in the connection leading from the main source of supply to the atomizer proper, the liquid will flow into the said reservoir. If a great quantity of liquid is required it' is advantageous to maintain this valve open during the spraying operation, but, under some conditions, a sufficient amount of liquid is allowed tofi ow into the reservoir, after which the valve is closed. of supply of liquid and the source of --'eupply of'ieompressed air can conveniently be coni tank which may be of any suitable con- Pd}: of quid and'a of air under pressure are made tank to the two nozzles,

Specification of Letters Patent.

1.1907. sum '11 355.201.

is preferr dfhowever, that the tank conatio'irr-with each'other. Suitable cons'rrsrm'rus.

Patented Nov. 5, 1907.

' and by opening or closing the valves. more or less in said connections, the-flow of the liquid and the air can be regulated independently one of the other.

The connection for the supply of liquid in the spelower end of the tank, and'pre ferably consists of a vert'ic'ally extending pipe, located exteriorly ofth'e tank and in communication therewith at the lower end thereof. The connection for the supply of compressed air extends from the upper end of the tank, that is to say:

therein These ducts from the tank may, of course, be connected in any suitable manner with the atomizer proper or with. .the nozzles thereof, but preferably I provide a coupling adjacent to the tank having two rigid ducts, one within the other, and provide'in the atomizer proper two @d ducts also one within the other, flexible connections one within the other are then interposed between the rigid ducts of the coupling and the rigid ducts of the atomizer. This results in a very simple and convenient construction.

The valves for regulating the flow of liquid may, of course, be located at any point, but preferably, and especially when a long flexible connection is used, they are located adjacent to or in the atomizer proper.

Other features of construction cornbination of elements and arrangement of parts will appear as the specification proceeds.

crete and preferred form, showing also. modifications. Itis evident, however, that this invention lends itself readily to embodiment in numerous and various forms, and that changes may be made and parts omitted without departing from the legitimate and intended scope of theinvention. I

In-the said drawings: Figure l is a vertical sectional view of a spraying apparatus embodying the invention. Fig. 2 is a vertical sectional detail view of the atomizer proper. Fig. 3 is a vertical sectional detail view of a modified form of atomizer.

Similar characters of refer'enceindicate corresponding parts in the several views 1 indicates a tank of any suitable'construction and 2 is the atomizer proper. This tank is provided with cylinder works the piston 5 provided with the valves 6. The tank can be filled with a sufficient amount of After this the cover and cylinder are placed in position lating the piston. t 7

Located exteriorly of the tank is a vertically ex- In the drawings the invention is embodied in a .con-

again and air under pressure is introduced by manipu- 1 cific form followed, consists of a duct leading from the from a point above the level of the liquid contained a cylinder 3 held by the removable cover 4; In this I liquid, when the cover 4 and cylinder 3 are removed.-

tending pipe 7 communicating with the tank at its lower end by means of the perforations 8. :Extending from the upper end of the tank is a pipe 9. 10 indicates a coupling having the rigid duct-s 1]. and 12 one within the oth or connecting respectively with the pipes 7 and 9.. Connected to the rigid ducts 11 and 12 are the flexible tubes 13 and 14 one within th e other whicliat their other end are in communication with the rigid ducts 15 and 16 in the'atbmizer proper. The atomizer carries two nozzles 17 and 18 one connecting with the supply of air and the other'with the supply of liquid. -The atomizer proper consists of two members one, denoted by 19, which is substantially ball shaped and has adownwardly and upwardly curved passage 20 the lower portion of which mayform a liquid reservoir. The

nozzle 18 connects with this passage 20. The other member 21 is composed of the two ducts 15 and 16 and 18. It will be noted that the interior Walls ofthe pas-= sage 20 are all curved, so that whether the liquid travels over the surface of the ball 23 or over the walls of the atomizer it has to traverse a curved surface which tepds to break it up. Suitable valves as 24 and 25 are inter posed in the air and liquid ducts. In Fig. 1 these valves are shown in'the rigid pipes secured to the tank while in Fig. 2 they are shown on the atomizer proper. In addition the collar 30 may beemployed located in the duct 16 to choke or retard the supply of-liquid.

In Fig. 3 are shown modifications in which theflexible ducts 26 and 27 are shown a's-being separate and connecting with the ducts 28-and 29 formed separately in the atomizer. When the valves 24 and 25 are opened the liquid and air will flow to'their respective nozzles, and the pressure of the air will regulate the supply of liquid expelled by means of the fluctuating ball. If desireda certain amount of liquid can be allowed to enter the atomizer proper, after which the valve 25 can be closed.

1. The combination of an atomizer, two nozzles carried thereby, means for supplying liquid to one of the said nozzles, means for supplying air under pressure to the other of the said nozzles, and means for regulating the amount of liquid discharged by one nozzle controlled by the pressure of air exerted by the other nozzle.

2. The combination oil an atomizer, two nozzles carried thereby, means for supplyin liquid to one of'the said nozzles, means forus upplying air under pressure to the other of the said nozzles, and a valve for regulating the amouht of liquid discharged by the one nozzie controiled by the pressure of air exerted by the other nozzle.

3. The combination of an atomizer, two nozzles carried thereby, means for supplying liquid to one of the said nozzles, means for supplying air under pressure to the other of the said nozzles, and a ball valvetorregulating the amount of liquid discharged by "on no'zzle controlled by the pressure of air exertedby the other nozzle.;,i

4. The combination of an atomizer having ,a liquid res ervoir, a nozzle extending therefrom, a second nozzle,

means for supplying air under pressure to the said second nozzleyand means located in the reservoir 'for-aiitomatically regulating the amount of liquid discharged by one nozzle controlled by the pressure or air exerted by the other nozzle.

5. The combination of an atomizer having a liquid reservolr, a nozzle extending therefrom, a second nozzle, means for supplying air under pressureto the said second nozzle, and a valve in the nozzle extending from the reservoir and adapted to be controlled by the pressure of the air exerted by the other nozzle.

' 6. The combination of an atomizer having a liquid reservoir, a nozzle extending therefrom, a second nozzle, means for supplying air under pressure to the said second nozzle, and a ball valve in the nozzle extending from the reservoir and controlled by the pressure of air exerted by the other nozzle.

7. The'combination of an .atomizer having a liquid reservoir, a nozzle extending therefrom, a second nozzle, means for supplying air under pressure to the said second nozzle, and means for breaking up the liquid before it .issues frointhe nozzle leading from the reservoir said means being controlled by thepressure the othernozzle.

8. The combinatlonpf an atbmizer having a liquid reservoir, a nozzle extehdingtherefrom, a second nozzle, means for supplying air under pressure to the' said second nozzle, and a fluctuating hall for breaking. up the liquid before it issues from-the nozzle leading from the reservoir said ball being controlled by the pressuri of air exerted by the other nozzle. x

9. The combination of an atomizer, two nozzles carried thereby, means' for supplying. liquid to one of the said nozzles, means for supplying air under press ire to the other of the said nozzles, and means'ior breaking up the liquid before it issues from the nozzle said means bing controlled by the pressure of air exerted by the other nozzle.

, 10. The combination or an atomizer, two nozzles carried thereby, means for supplying liquid to one of the said nozzles, means' for supplying air under pressure to. the other or the said nozzles, and afluctuating ball for breakingup the liquid before it issues from one nozzlesaid ball being controlled by the pressure of air exerted by the other nozzle.

11. The combination of an atomizer having a r'eservoln,

of air exerted by two nozzles in said atomizer, one of which connects with thesaid reservoir, means for. supplying liquid under pressure to the said reservoir andnozzle connected therewith, adapted to be closed at will, and means 1361' supplying air under pressure to the other of the said nozzles, whereby liquid contained in the reservoir is drawn out through the nozzle connected therewith by the discharge of air through the other nozzle. I

- 12. The combination of an atomizer havlnga'reservoirl two nozzles in said atomizenjone of which connects with the said reservoir, means for supplying liquid under pres' 1 sure to the said reservoir and nozzle connected therewith adapted to be closed at will, and means for supplying air under pressure to the other of the said nozs lpa, whereby the liquid izontained in the reservoir is drawn out through the nozzle connected therewith by the discharge of air through the other nozzle, and means located-in the reservoir forfautomatically regulating the amount 01. liquid discharged by the one nozzle said means'being controlled by the pressure of air exerted by the other nozzle.

13. The combination of a tank containing a-body of liquid and, a supply or air under pressure in free communication with each other, an atomizer having a reservoir, t wo nozzles on said atomizer, one of which connects with the reservoir, 1: connection'rrom the lower end of the tank communicating with the reservoir and nozzle connected thereto adapted to beciosed at will, and a connection from'the upper end of the tankcommunicating withthe other of the said nozzles whereby the liquid contained in the reservoiris drawn out through the nozzle con-. nectedizhereto bythe discharge of air through the otherno zle. 7 I

14. The combination of atank containing'abody of liquid and a supply of air under pressure in treecom- -munication with each other, an atomizer having areser-I;

voir, two nozzles on said atomizer, one qt which connects with the reservoir, a connection from the lower-end of the .tank communicating with the reservoir and the nozzle con- 'nected thereto, adapted to be closed at will, and a conncctlon from the upper end or the tank communicating with the other of the said nozzles, whereby the. liquid contained in the "reservoir is drawn out through the nozzleconnected v thereto by the discharge of air through the other nozzle, and means located in atomizer for automatically regulating the amount of liquid discharged by the one nozzle and controlled by the pressure ofair exerted by the other 5 nozzle. 1

15. The combination of an atomizer composed of two members, one of which is provided with a passage having curved walls, a nozzle extending from said passage, a fluctuating bail contained in said passage the other of 10 the said members being connected to the said passage, a

nozzle carried by the said other member, and means for supplying air under pressure to the nozzle carried by the said other member.

Signed at New York city in the county of New York and State of New York this 24th day of January A, D. 15

DWIGHT F. rnnvos'r. Witnesses T. F. VAN ZANDT, AXEL V. BEEKEN. 

